Washing machine



FIG. 1 is a front, left side, perspective view showing a washing machine according to our design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof; and,

FIG. 5 is a top view thereof.

The broken lines represent environment or structure and do not form any part of the claimed design.

The rear and bottom views are unornamented and/or unclaimed and are therefore not provided. 

CLAIM The ornamental design for a washing machine, as shown and described. 